Q99 / 180 · JIPMER 2019 · Physics

If frequencies are $(v-1),(v+1)$, then find beats.

  • Correct answer
    A
    2
  • B
    1
  • C
    3
  • D
    4

Solution

For frequencies $v_1=v-1$ and $v_2=v+1$. $\begin{aligned} \text { Beats } & =\text { difference of frequencies } \\ & =v_2-v_1=(v+1)-(v-1)=v+1-v+l=2 \end{aligned}$

Hence, the correct answer is option: 'A'.

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